Battery tebmibfal x x x a and cable clamp



Sept. 18, 1928. 1,684,985

., s. R. GARNER, SR

BATTERY TERMINAL AND CABLE CLAMP Filed Sept. 4, 1925 dqnua R. GARNER JR.

Patented Sept. 18, 1928.

etters c UNlT ED stares PTENT OFFICE.

sAMuEL Rosanna, sit, or oitnvnnnnn, OHIO.

BATTERY TERMINAL BJNJD CABLE CLAMP.

Application filed September 'My. invention relates particularly to means for-attaching wires or cables to the terminals of storage batteries such as arecommonly used in the operation of automobiles and radio apparatus.

"The ordinary means for attaching}: a cable to a battery terminal consists oi. aclamp attached to the end of the cable either by soldering or'by a set screw and adapted to be clamped to the battery terminal by means oi a flangedhead screw which must be completelyunscrewed and removed when connecting or disconnecting the battery This type of; clamp is difficult to attach or detach, cannot easily be changed from one cable or one battery to another and the clamping screw is frequently lost or misplaced causing loss of time and annoyance.

Among the objects of my invention are the provision of a clamp which army he .c'i. .lv attachedboth to the cable and to the battery terminal; the provision oi clamp which r quires no soldering for making connections either to the cable or the battery terminal; the provision of a clamp having; only one screw and a nut for tightening; and adjusting: the connections to both the battery t er =minal and the cable: the provision of a clamp WlllCh can be detached from thebatmry tenminal WltllOUt disturbing! its pgrlp on the .cable; the provision ota clamp that permits ferent sizes of cables or wires; the pro the removal of an old cable and thei allation of a new one without removin the clamp from the battery terminal; the provision of a clamp that may be chanaed from one battery terminal to another without .emoving the cable trom'the clamp; the provision of a clamp that may be used with lition of a clamp that may be operated without removing any part of it: and the provision of an inexpensive, rugged means for making; connections between battery terminals and the conductors leading); to them.

The foregoing and other objects are aecomplished by the use of my invention described herein and shown in the accompanying drawinns in which Fig. 1 is a plan view of a battery terminal and cable clamp embodying; my invention showing the cable in position;

Fig. 2 is a vertical cross-section on line 11-11 of 1 with battery terminal shown in dotted outline Fig. 3 is a side elevation of the battery terieaa serial no- 54,500.

minal and cable clamp shown in- Figs. 1

and 2;

view of the cableshowing the scarred joint of the sheath; 3

Fig. 6 is a plan and N Fig. 7' is an end elevation of the battery terminal clamp.

Referring to the drawings, 1 is a battery terminal clamp composed of a sleeve portion having an aperture 2 adapted to fit the battery terminal. The clamp 1 issplit longitudina-lly at 3 to permit the contraction of the sleeve to clamp the battery terminal. firms at and 5 are provided upon respectively opposite sides'oi the slot 3. Arm 1 has an unthrea ad aperture 6 of suiticient size to permit the clamping screw 7 to pass freely through it. Arm 5' preferably has a grooved iace forming an abutment against which the cable conductor 9 may be clamped.

10 is a cable clamp provided with an aperture 11 adapted to loosely receivethe arm 5 of clamp 1 and the conductor cable 9. A threaded aperture 12 is provided in cable clamp 10 and the screw '5 is threaded into this aperture. A. nut 13 on the screw co-acts with the screw and cable clamp 10 to contract the clamp 1 upon the battery terminal 14;. i

In the use o't my invention the conductor cable 9 is clamped against the arm 5 of battery terminal clamp 1 by means of cable clamp 16 and screw 7, the end'oit which atmts RlZtlllStthe inner side of arm 5 to draw the clamp 10 across arm 5 and thereby grip the cable. The battery terminal 141- is clamped by drawing together arms 4 and 5 and contracting the sleeve oi clamp 1 by means of nut 13 upon screw 7.

To remove the clamp 1 from the battery terminal 14-, the nut 13 may be loosened without loosening; the screw 7 and the clamp 1 may then be removed from the terminal 1% without loosening" the cable 9. The cable 9 may be removed from the clamp by loosening the screw 7'. In this case the clamp 1 will be also loosened due to the slackening" off the pressure of clamp 10 but the clamp 1 may remain upon the battery terminal while the cable 9 is removed.

It not necessary to completely unscrew screw 7 from clamp 10 to operate my invenprefer that'the head of, the screw "7 be made the samesize and shape as the nut 13 so that the same wrench may be used for operating either of them, but it is obvious that any suitable. screw may be used and that it may be provided with a screw-driver slot if desired.

In Figs. 4 and 5 the insulated cable 9 is shown with the insulation removed from one end and the scarfed metal sleeve 15 encompassing the stranded conductors of the cable.

It will be observed that the cable clamp 10 is adapted to clamp either stranded or solid conductors of suitable size to enter thev aperture formed between the'clamp 10 and the arm 5 and be clamped within the range of adjustment of the clamp 10 relative to the arm 5.

It will be observed that my invention accomplishes its stated objects, that its construetion is simple, easily operated and inexpensive and that it is strong and durable.

I claim- 1. A battery terminal and cable clamp comrisim a s lit sleeve havin arms extendin outwardly, one on each side of the split, one of said arms being adapted to form an abutment for an electrical conductor, the other of said arms having an unthreaded aperture adapted to loosely receive the shank of a I clamping screw, acable clamp loosely fitting over said first named arm adapted to clamp an electrical conductor to said first named arm, said cable clamp having a threaded aperture, a clamping screw in said threaded aperture adapted to abut against said first named arm to draw said cable clamp toward it to clamp said electrical conductor, said screw passing freely through said unthreaded aperture, and a nut on said screw adapted to engage said second named arm and co-act with said screw and said cable clamp to draw said arms toward each other to contract said sleeve.

2. In a battery terminal and cable clamp a Split sleeve adapted to receive a battery terminal, said sleeve having an extension adjacent one side of the split in said sleeve adapted to form an abutment for one side of an electrical conductor, said sleeve having a second extension adjacent the other side of the split in said sleeve, a conductor clamp encompassing said first named extension and adapted to receive a conductor between said first named extension and the wall of said clamp, means co-acting with said first named extension and said conductor clamp to clamp said conductor therebetween, and means coacting with said extensions and said conductor clamp to contract said sleeve.

'3. A battery terminal and conductor clamp comprising a split sleeve adapted to receive a battery terminal and having two arms, one extending on one side and the other extending on the other side of the split in said sleeve, one of said arms having an aperture and the other of said arms being adapted to form an abutment for a conductor, screw means extending freely through said aperture adapted to abut against that one of said arms that forms said conductor abutment, a conductor clamping member encompassing said conductor abutment arm and having a threaded aperture adapted to receive said screw means whereby when said screw means is screwed against said conductor abutment arm, said conductor clamp is tightened, and a nut on said screw adapted to be screwed against said apertured arm and co-act with said screw and said conductor clamp to contract said split sleeve.

SAML R. GARNER, SR. 

